Purification and optical properties of TlBr crystals
β Scribed by Shijin Yu; Dongxiang Zhou; Shuping Gong; Zhiping Zheng; Yunxiang Hu; Chuan Wang; Lin Quan
- Book ID
- 108223728
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 414 KB
- Volume
- 602
- Category
- Article
- ISSN
- 0168-9002
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π SIMILAR VOLUMES
TlBr doped with In and Pb was synthesized and grown using a vertical Bridgman method. The segregation coefficients of both dopants in TlBr were calculated using the different experimental optical and electrical characteristics of (TlBr) 0.973 -(InBr) 0.027 and (TlBr) 0.972 -(PbBr 2 ) 0.078 crystals.
The present growth technology of TlBr detector crystals cannot provide the required quality. Its further development requires considerable studies of characteristics of the crystals, grown in various conditions, including optical methods. Optical characteristics were measured for TlBr crystals grown
The combination of distillation, Bridgman-Stockbarger, hydrothermal recrystallisation and travelling molten zone (TMZ) methods were used for TlBr purification. Grown crystals were characterised by XRD rocking curve and FTIR spectroscopy methods, and by electrical measurements made from 200 to 300 K.